Swinging-jack journal for gang-saws.



F. PIERCE.

SWINGING JAGK JOURNAL FOB. GANG SAWS.

APPLIOATION FILED 0011.13, 1913.

1,1 12,930. Patented Oct. 6, 1914.

THE NORRIS PETERS CO-. PHOTO-Livia, WASHINGTON D, C

FRANK PIERCE, or nurtnnn, VERMONT, rissienon .TofLmooLN. inonwonKs,

RUILANQhVERIVIONT, A CORPORATION OFVERMONE.

STATES PATEN OFFICE.

SWINGINGJACK JOURNAL non GANG-SAWS.

Specification of Letters Patent;

. Patented oet. c, 1914..

Application filed October 13, 1913. SeriaLNo. 794,948. a i y 1 To all whom it may conoernr} Be it known thatI, FRANK PIERCE, a

citizen of the United States, residing at Rutland, in the county of Rutland and State of Vermont, have invented certain new and useful Improvements in {Swinging-Jack Journals for Gang-Saws, ofYwhlch the following 1s a specification, reference belng had therein to the accompanying drawing.

This inventionrelates to certain new and useful improvements in swlngmg ack 10111- nals for gang saws; the object being to provide a journal for connecting the suspension rod to the gang saw frame, whereby the same Wlll be supported firmly; means being provided for protecting thejournal from the sand used in sawing the slabs.

Another object of the invention is to pro vide a swinging j ack journal which isex' ceedingly simple and cheap in construction andone in which means is provided for dust.

lubricating the journal through the suspension rod pin in such a manner that the same a will be thoroughly lubricated without any danger of becoming cloggedby the dirt and Another object of the invention is topro vide means for protecting the suspension rod pin in the form of an eccentricbronzed bushing which can be adjusted by a set screw.

Another object of the invention isto provide a journal in which the lower end ofthe.

suspension rod carries a hood member forming a fork in which the bearing member car? ried by the gang saw frame is pivotally mounted upon the suspension rod pin in such a manner thatit can be easily and quickly attached or detached; the entire bearing being inclosed withinthe hood.

Other and further objects and advantages of the invention willbe hereinafter set forth and the novel features thereof defined by the appended claims. 'j

'In the drawings Figured; is a side elevation of a suspension rod showing thejournal in section; Fig; 2, is an. end elevation, the

journal being shown insection; Fig. 3, is a perspective of the eccentric bushing, de

. tached; Fig. 4, is a vertical enlarged section of the hood or fork for supporting the gang saw frame; and Fig. 5,is anendview ofthe suspension pin, detached. i

Like numeral of reference refer to. like parts in the several figures of the drawings In gangsaws now in use the gang saw frame is supported at each end and the main object of this invention is to provide a swinging jack journal for the gang fsaw frame which willsupport the frame in such a manner that the same will bevfree tomove arranged at each end thereof and upon. whlch 1s mounted spaced coupllngs 2 and 3 to whlch are connected thesuspension rods s and 5 by bolts as shown at 6; the suspension rod 4 hangmgin a vertical plane while the suspension rod 5 is arranged diagonally and forms a brace; the lower end thereof be iug provided with a vertical portion 7 adapted to abut against the lower end'of therod l and be connected to the extension 8 of a hood 9 by .bolts 10 passingftransversely through bores formed in the respective mem bers and upon which are mounted lock nuts for securely holding. the members together and for supporting the hood. The hood 9 is preferably cow-bell shapeythe walls there of being provided with circular bosses llextending inwardly from opposite sides and said bosses are provided with openings 11 through. which extends a suspension pin 12 provided with a head 13 having. lateral wings 14: through which cap screws :15 are adapted to pass forholding said pin in position withinthe openings of the hood and for a preventing the same from rotating. The a suspension pin is provided with .a transverse bore, onelend of which is closed by a plug 15.

and the opposite end has an oil pipe16se curedtherein whichextends upwardly and is connected to a suitable lubricating device 17 carried by the cross bar 1 and from which the lubricant is adapted to be conveyed to the suspension pin. The suspensionpin is provided with a'lateral or outlet 18 extending from the bore thereof to the periphery of the same through which lubricant. is adapted to pass, as will be later described.

Arranged upon'the pin 12 is aneccentric bronzed bushing 19 provided with a central annular groove having a lug 20 projecting therefrom which fits within a notch 21 formed in the circular bearing 22 which is provided with a foot portion 23 connected to the gang saw frame 25% by bolts 25. The foot portion 23 is cut away as shown at 26 to form an opening; the upper wall of which is provided with a threaded bore extending in the notch 21 of the bearing and in which is mounted a set screw 27 adapted to engage the lug 20 of the bushing 19 for adjusting the same; said set screw being locked by a lock nut 28 in its adjusted position and it will be seen by this construction, that the bearing is mounted upon a bronzed bushing carried by a stationary suspension pin in such a manner that the wear of the bushing can be taken up in order to compensate for,

any lost motion. I I

In the construction of jack-journal as herein shown and described, the jack constituting the bearing 22 having the foot portion 23, is rigidly attached to the gang saw frame and in use, one of these jacks is placed in position upon each corner of the gang saw frame and securely bolted thereto.

The suspension fork or hood, is provlded with oppositely disposed bosses, so 0011- structed' that the same fit snugly over the bearing portion of the jack and by forming the suspension pin with a head as shown for rigidly attaching the same to the rectangular-shaped hood, it is of course seen, that the same is prevented from rotating and when the bushing is in position thereon, the lug carried thereby extends into the recess or notch formed in the bearing 22 and by forming'the same eccentric, when the screw is tightened, the same will be forced tightly around the suspension pin within the hearing in order to form an exceedingly tight joint and by' constructing the suspension fork in the form of a rectangular hold, the lower end of which extends down beyond the bearing, the same is thoroughly protected from the sand and dirt arising from the sawing machine, whereby the life of the bearing is greatly increased In connection with this form of bearing, a novel lubricating means is employed whereby oil is injected into the bearing or central portion of the bushing. in order to thoroughly lubricate the same.

From the foregoing description, it. will be seen that I have provided. a swingingv jack journal for a gang saw .frame in which a stationary jack or hearing. is fixed to the gang saw frame in which jack oscillates a suspension pin rigidly attached to the suspension hood and over which is arranged an eccentric bushing for taking up wear; the parts being so arranged and connected together that all danger of the same becomtion, is prevented and an exceedingly simple and cheap construction 1s formed, winch has ter, the bushings or supporting-pins of the gang saw frame soon wear to such an extent that the frame wabbles in its movement and a clear cut is not obtained, while w1th ,my construction, I have provided a convenient way of taking up the wear by means of a split eccentric bushing which enables the supporting bearings to be adjusted so as to maintain the gang saw frame in a true position in its swingingmovement, and as this is most important in stone sawing'machines of this character, it willbe found that a great advantage has been obtained by providing means for compensating for the wear of the supporting journal and while I am aware that other devices have been used they have. failed to accomplish the desired result.

I claim: r

1. A device of the kind described, compris ing a rectangular-shaped hood having oppositely disposed openings and provided with oppositely disposed internal bosses, of a bearing arranged between said bosses, an

necting said bearing tothe gang, saw frame. 2. A swinging ack ournal for gang saws,

comprising a bearing having a foot portion for connecting it to the gang saw frame,

said bearing having a notch, an eccentric bushing arranged within said bearing having a projection extending into said notch, a set screw carried by said bearing engaging said projection, a hood arranged over said bearing, a suspension pin carried by said hood extending through said bushing, and suspension rods having a connection with said hood. I

A swingingjack journal for gang saws havinga suspension pin provided with a lubricating. bore having a lateral, an eccentric bushing surrounding said eccentric pin,

a support for said pin, a bearing surrondi-ng said bushing, and means for connecting; said bearing to the gang saw frame.

4. A device of the kind des ribed, com.

prising abell-shaped hood, having an .ex-

tension provided with internally oppositely disposed bosses, a suspension pin fixed to said hood extending through said bosses, suspension rods connected tosaid extension, a bushing surrounding said suspension pin, means for adjusting saidbushing, a bearing arranged upon saidbushing. within said hood, and means for connecting said bearing to the gang saw frame. ing accidentally separated when in opera- 5. A swinging jack journal for gang saws,

ing, a set screw carried by said bearing a suspension pin carried bysaid hood member extending through said bearing, and an eccentric bushing surroimding said suspension 6. In a device of the kind described, the

combination with a bell-shaped hood having a an extension connectingthe same to a suspension rod', of a bearing arranged Within said hoodhavinga foot for connecting the same to the gang saW frame, a suspension Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

pinzextending through said hood and bear ing, an eccentric bushing arranged on said p111 :Within said bearing, said pin being provided with a lubricating bore, and an oil pipe connected to one end of said bore for I supplying lubricant thereto.

Intestimony whereof I affix my signature in presence of two Witnesses.

1 FRANK PIERCE. I

Witnesses:

PERCY ADAMS, R. H. DAVIS.

Washington, D. 0.! 

